Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual - part 362

GD(H4DOTC)-200

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

DO:DTC P0617 STARTER RELAY CIRCUIT HIGH

1. OUTLINE OF DIAGNOSIS

Detect abnormal continuity in the starter SW.

Judge as ON NG when the starter SW signal remains ON.

2. ENABLE CONDITIONS

3. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

4. DIAGNOSTIC METHOD

• Abnormality Judgment
If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Time Needed for Diagnosis: 30000 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.
• Normality Judgment
Judge as OK and clear the NG if the continuous time while the following conditions are established is more

than the predetermined time.

Time Needed for Diagnosis: Less than 1 second

Secondary Parameters

Enable Conditions

None

 

Judgment Value

Malfunction Criteria

Threshold Value

Battery voltage

≥ 8 V

Engine condition

After engine starting

Starter SW signal

ON

Judgment Value

Malfunction Criteria

Threshold Value

Battery voltage

≥ 8 V

Starter SW signal

OFF

GD(H4DOTC)-201

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

DP:DTC P062F INTERNAL CONTROL MODULE EEPROM ERROR 

1. OUTLINE OF DIAGNOSIS

Judge as NG when the EEPROM operation is abnormal. (EEPROM malfunction)

2. COMPONENT DESCRIPTION

3. ENABLE CONDITIONS

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

(1)

Throttle position sensor

(6)

Accelerator pedal position sensor 
2

(10) CPU

(2)

Throttle position sensor 1

(7)

I/F circuit

(11) Monitoring IC

(3)

Throttle position sensor 2

(8)

Amplifier circuit

(12) EEPROM

(4)

Accelerator pedal position sensor

(9)

Engine control module (ECM)

(13) Output IC

(5)

Accelerator pedal position sensor 
1

 

 

 

 

Secondary Parameters

Enable Conditions

Starter switch

OFF

Battery voltage

> 6 V

EN-08016

(1)

(4)

(2)

(3)

(5)

(6)

(9)

(7)

(10)

(11)

(7)

(7)

(7)

(8)

(12)

(13)

GD(H4DOTC)-202

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

5. DIAGNOSTIC METHOD

Judge as OK and clear the NG when the malfunction criteria below are met.

Time Needed for Diagnosis: 48 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

Judgment Value

Malfunction Criteria

Threshold Value

EEPROM writing

Writing completed

GD(H4DOTC)-203

Diagnostic Trouble Code (DTC) Detecting Criteria

GENERAL DESCRIPTION

DQ:DTC P0851 NEUTRAL SWITCH INPUT CIRCUIT LOW (MT MODEL)

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of neutral SW.

Judge as NG when there is no change in the neutral SW even if the driving shift was applied. (There is neutral

SW ON/OFF inversion from the vehicle speed and engine speed.)

2. ENABLE CONDITIONS

3. GENERAL DRIVING CYCLE

Perform the diagnosis continuously in 2 seconds after starting the engine.

4. DIAGNOSTIC METHOD

• Abnormality Judgment
Judge NG when the malfunction criteria below are completed determined times or more after the neutral SW

change.

Time Needed for Diagnosis: 3 time(s)

Malfunction Indicator Light Illumination: Illuminates when malfunction occurs in 2 continuous driving cy-

cles.
• Normality Judgment
Judge as OK and clear NG when there is change in the neutral SW.

Time Needed for Diagnosis: Less than 1 second

Secondary Parameters

Enable Conditions

Battery voltage

≥ 10.9 V

Starter relay

OFF

Judgment Value

Malfunction Criteria

Threshold Value

Neutral switch signal (while changing from a to b below)

LOW (ON) continues.

Driving condition change

From a) to b)

a) Engine speed 600 rpm — 900 rpm & Vehicle speed = 0 km/h (0 MPH)

 

b) Engine speed 1600 rpm — 2550 rpm & Vehicle speed ≥ 64 km/h (39.8 MPH)

 

Judgment Value

Malfunction Criteria

Threshold Value

Neutral switch signal (while changing from a to b below)

Changes to HIGH (OFF).

Driving condition change

From a) to b)

a) Engine speed 600 rpm — 900 rpm & Vehicle speed = 0 km/h (0 MPH)

 

b) Engine speed 1600 rpm — 2550 rpm & Vehicle speed ≥ 64 km/h (39.8 MPH)